What's the best way to clear a listbox?

and

What's the best way to relist items in a listbox that come from a table using scan...endscan? I thought by setting my counter (index) to 1 the list would start over at the top of the listbox each time through the scan...endscan. Instead, it appends (repeats) the same info within the listbox. I suspect my counter is not getting reset, but I am not quite sure if that's the cause.

Thanks for the help.